<template>
  <div :style="styleObj">
    <v-chart :options="options" autoresize />
  </div>
</template>

<script>
import { queryEchartsData } from "@/api/bigscreen";
export default {
  name: "WidgetPiechart",
  components: {},
  props: {
    value: Object,
    ispreview: Boolean
  },
  data() {
    return {
      options: {
        title: {
          text: "",
          left: "center",
          textStyle: {
            color: "#fff"
          }
        },
        legend: {
          orient: "vertical",
          left: "left",
          icon:'circle',
          itemGap: 20,
          textStyle: {
            color: "#fff"
          }
        },
        series: [
          {
            type: "pie",
            radius: "50%",
            data: [],
            emphasis: {
              itemStyle: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: "rgba(0, 0, 0, 0.5)"
              }
            }
          }
        ]
      },
      optionsStyle: {}, // 样式
      optionsData: {}, // 数据
      optionsCollapse: {}, // 图标属性
      optionsSetup: {}
    };
  },
  computed: {
    styleObj() {
      return {
        position: this.ispreview ? "absolute" : "static",
        width: this.optionsStyle.width + "px",
        height: this.optionsStyle.height + "px",
        left: this.optionsStyle.left + "px",
        top: this.optionsStyle.top + "px",
        background: this.optionsSetup.background
      };
    }
  },
  watch: {
    value: {
      handler(val) {
        this.optionsStyle = val.position;
        this.optionsData = val.data;
        this.optionsCollapse = val.collapse;
        this.optionsSetup = val.setup;
        this.editorOptions();
      },
      deep: true
    }
  },
  created() {
    this.optionsStyle = this.value.position;
    this.optionsData = this.value.data;
    this.optionsCollapse = this.value.collapse;
    this.optionsSetup = this.value.setup;
    this.editorOptions();
  },

  methods: {
    // 修改图标options属性
    editorOptions() {
      this.setOptionsData()
      this.setOptionsTitle();
      this.setOptionsValue();
      this.setOptionsLegend();
      this.setOptionsColor();
      this.setOptionsPiechartStyle();
      this.seriesDataTotal();
      this.setOptionsTooltip();
    },
    // 饼图样式
    setOptionsPiechartStyle() {
      if (this.optionsSetup.piechartStyle == "shixin") {
        this.options.series[0]["radius"] = "50%";
      } else if (this.optionsSetup.piechartStyle == "kongxin") {
        this.options.series[0]["radius"] = ["40%", "60%"];
      }
      const optionsCollapse = this.optionsSetup;
      const series = this.options.series[0];
      series.center = [optionsCollapse.lateralPie + '%', optionsCollapse.longitudinalPie + '%'];
    },
    // 标题设置
    setOptionsTitle() {
      const optionsCollapse = this.optionsSetup;
      const title = {};
      title.show = optionsCollapse.isNoTitle;
      title.text = optionsCollapse.titleText;
      title.left = optionsCollapse.textAlign;
      title.textStyle = {
        color: optionsCollapse.textColor,
        fontSize: optionsCollapse.textFontSize,
        fontWeight: optionsCollapse.textFontWeight
      };
      title.subtext = optionsCollapse.subText;
      title.subtextStyle = {
        color: optionsCollapse.subTextColor,
        fontWeight: optionsCollapse.subTextFontWeight,
        fontSize: optionsCollapse.subTextFontSize
      };
      this.options.title = title;
    },
    // 数值设定
    setOptionsValue() {
      const optionsCollapse = this.optionsSetup;
      const series = this.options.series;
      const numberValue = optionsCollapse.numberValue ? "{c}" : "";
      const percentage = optionsCollapse.percentage ? "({d})%" : "";
      const label = {
        show: optionsCollapse.isShow,
        // formatter: `{a|{b}：${numberValue} ${percentage}}`,
        formatter: `${this.seriesDataTotal()}`,
        position:'center',
        // rich: {
        //   a: {
        //     padding: [-30, 15, -20, 15],
        //     color: optionsCollapse.subTextColor,
        //     fontSize: optionsCollapse.fontSize,
        //     fontWeight: optionsCollapse.fontWeight
        //   }
        // },
        fontSize: optionsCollapse.fontSize,
        color: optionsCollapse.subTextColor,

        fontWeight: optionsCollapse.optionsCollapse
      };
      for (const key in series) {
        if (series[key].type == "pie") {
          series[key].label = label;
          series[key].labelLine = { show: optionsCollapse.isShow };
        }
      }
    },
    // 提示语设置 tooltip
    setOptionsTooltip() {
      const optionsCollapse = this.optionsSetup;
      const tooltip = {
        trigger: "item",
        show: true,
        textStyle: {
          color: optionsCollapse.lineColor,
          fontSize: optionsCollapse.fontSizeTip
        }
      };
      this.options.tooltip = tooltip;
    },
    // 数据总和
    seriesDataTotal() {
      let seriesData = this.options.series[0].data
      let total = seriesData.reduce((a,b) => {
        return a + b.value * 1
      },0)
      return total
    },
    // 图例操作 legend
    setOptionsLegend() {
      const optionsCollapse = this.optionsSetup;
      const legend = this.options.legend;
      legend.show = optionsCollapse.isShowLegend;
      legend.left = optionsCollapse.lateralPosition + "%";
      legend.top = optionsCollapse.longitudinalPosition;
      // legend.left = optionsCollapse.lateralPosition == "left" ? 0 : "auto";
      // legend.right = optionsCollapse.lateralPosition == "right" ? 0 : "auto";
      // legend.top = optionsCollapse.longitudinalPosition == "top" ? 0 : "auto";
      // legend.bottom =
      //   optionsCollapse.longitudinalPosition == "bottom" ? 0 : "auto";
      legend.orient = optionsCollapse.layoutFront;
      legend.textStyle = {
        color: optionsCollapse.lengedColor,
        fontSize: optionsCollapse.lengedFontSize
      };
      legend.itemWidth = optionsCollapse.lengedWidth;
      let seriesData = this.options.series[0].data
      let total = this.seriesDataTotal()
      legend.formatter = (name) => {
        let res = seriesData instanceof Array ? seriesData.filter(v => v.name === name) : []
        res = res[0] || {}
        return `${name}：${res.value} / ${(res.value / total * 100).toFixed(2)}%`;
      }
    },
    // 图例颜色修改
    setOptionsColor() {
      const optionsCollapse = this.optionsSetup;
      const customColor = optionsCollapse.customColor;
      if (!customColor) return;
      const arrColor = [];
      for (let i = 0; i < customColor.length; i++) {
        arrColor.push(customColor[i].color);
      }
      this.options.color = arrColor;
      this.options = Object.assign({}, this.options);
    },
    setOptionsData() {
              const optionsData = this.optionsData; // 数据类型 静态 or 动态
      optionsData.dataType == "staticData"
        ? this.staticDataFn(optionsData.staticData)
        : this.dynamicDataFn(optionsData.dynamicData, optionsData.refreshTime);

    },
    staticDataFn(val) {
      const staticData = typeof val == "string" ? JSON.parse(val) : val;
      for (const key in this.options.series) {
        if (this.options.series[key].type == "pie") {
          this.options.series[key].data = staticData;
        }
      }
    },
    // 动态数据
    dynamicDataFn(val, refreshTime) {
      // 如果没有请求参数不调接口
      let isQuery = val && val.url && val.dataMethod
      if (!isQuery) return;
      // 动态数据调接口
      if (this.ispreview) {
        this.getEchartData(val);
        // 刷新时间为0不轮询接口
        if(refreshTime === 0) return
        this.flagInter = setInterval(() => {
          this.getEchartData(val);
        }, refreshTime);
      } else {
        this.getEchartData(val);
      }
    },
    getEchartData(val) {
      queryEchartsData(val)
      .then(res => {
        if (res.tx_status !== "00") return;
        this.renderingFn(res.data);
      })
      .catch((err) => {
        this.$message.error(err);
      });
    },
    renderingFn(val) {
      // console.log(this.options.series,'val', val);
      for (const key in this.options.series) {
        // console.log(this.options.series[key], ">>>>")
        if (this.options.series[key].type == "pie") {
          this.options.series[key].data = val;
          this.setOptionsTitle();
          this.setOptionsValue();
          this.seriesDataTotal()
          this.setOptionsLegend();
          this.setOptionsColor();
          this.setOptionsPiechartStyle();
        }
      }
    }
  }
};
</script>

<style scoped lang="less">
.echarts {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
</style>
